William mat



N.FETER5. FHOTO-UTMDGRAPHER. WASHINGTON, D C,

@geiten tetra lsteat @fitte IMPROVED MOBE FOR PRESSNG LEATHER 'SEAMS.

dige rlgtxtlt referat in in time @that iitent mit mating mi tf tip tatu.

TO ALL .WHOM IT MAY CONCERN:

Be it known that I, WILLIAM MAY, of Binghamton, in the county of Broome,and State of New York, have invented a new and improved Machine forPressing Leather Seams; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this speci-cat-ion. V

The object of this invention is to construct and arrange a machinewhereby leather seamsof any descrip- Y tion, whether straight or curved,whether used for boots or shoes, or for saddles, or for any otherarticle whatever, may be pressed neatly and without trouble, saidmachine being ot' simple construction and cheaply made.

,My invention consists in the application of treadles to suchSeam-pressing machines; also, in the manner ol` making the clampingdevice, wherein the leather is held, seliadjustable, for any thicknessof leather; and also in the adjustable spring, whereby the pressure uponthe seam may be varied to suit different kinds of work; and also in theConstruction ot' the treadle, so that the least possible strainmay beput upon theworking parts of the machine. ln the accompanying drawing myinvention is completely illustrated.

Figure 1-is a side elevation of my invention, partly in section, showingthe parts at rest.

Figure 2 is a similar view, showing the parts in working position.

Figure 3 is a vertical cross-section of the same, takenon the line 2: x,fig. 2f

Figures 4 and 5 are detail views, to bc hereinafter referred to.

Similar letters of reference indicate like parts. i

A is a table or platform, which-is m'ade of wood or anyother suitablematerial, and upon which all the other parts of my machine are arranged.A. cast-iron or other metal upright, B, is secured to the table, and init is arranged a box, wherein the horizontal axle of the wheels C and Dis mounted. The wheel C is 0f smaller diameter than the wheel D, and toits periphery are secured two cords, 0i and b, the latter going directdown to the centre of the treadle E, while the former is connected to aspiral spring, c, which is attached to an arm, c, which extends at aright angle from the treudle and is part of the saine. This arm doesgreatly protect the spring c, as, when the treadle is' pressed down, asin fig. 2, the end ot' the arm c', to which the spring. is attached,will swing around the pivoting point d of the treadle, and will therebyconsiderably diminish the distance from end to end of the spring,therebylessening the strain of the spring. By pressing on the treadle thewheels C and D will be rotated inthe direction of the arrow, shownthereon in iig. l; thereby a cord. or rope, e, which is secured to theperiphery of the large wheel, and'to the rcareud of a sliding-bar, F,will draw this bar forward to the position shown in fig. 2. As soon asthc pressure of the treadle is released the spring c will draw thewheels back again, and therebyia oord, f, which is also attached to theperiphery oi' the large wheel, and to the front end of the bar F, willdraw this bar back again into the position shown in fig. 1. The bar F ispivoted to a small block, which fits into a dove-tailed groove, b',which is sunk into a horizont-.tl arm, B, attached to the support B.Another arm, G, or rather two horizontal extensions, arc securerl'to thefront edges of the upright B, and between them is held the clamp andholder H. This consists of the lower stationary block or rest 7L, towhich the slotted clamp h/ is pivotcd, as shown. A spring, I, which isof flat metal plate, and in the shape of a hook, is secured with itsshort arm to tbe rear endot' the bar F, and is held there by aset-screw, g. This short arm is so bent that thespring will rest uponthe har F, in rear oi' the fastening' point g, so that its extreme lowerend will press up against thc head of the set-screw g. Thus the more thescrew g is turned down the harder will be the pressure of the smootherK, which is secured to the uppervend of the spring I, upon the seam,which is held between the rest L and clamp 7L', as shown in iig. 3. Thelower edge of the rest 7L conforms to and is parallel with its upperedge, so that when a curved seam' is to be pressed, and a curved restand clamp, H, have to b'e used, (iig. 4,) then the front end of the barF, which fis provided with a friction-roller,f, (fig. 3,) is pressedagainst this curved lower edge, and thereby the smoother K will be heldwith equal pressure upon each part of the curved upper surface, whileotherwise the pressure would be greatest where 7i was highest, and einece1-sa. The leather, after having been sewn, is placed between the restand clamp, in the manner shown in fig. 3, so that the seam will bc uponthe centre et' the rest. The trcadlc isthen pressed down and thesmoother or presser K will therebybe brought over the senin into thcposition shown in tig. 2li When the treadle is rcleasedthc presser willhe' pulled back again by the action of amer the spring c, While theleather, is also relensei from the rest and clmnp by means' of o spring,i, which throws the clamp h" up :is soon es the pres-sure upon the sameceases, ns shown in iig. 1. To adept this elmnp and rest to leather ofdifferent thickness, the pivoting pin Z, `which connects the rest Vandchimp, posses through a. slot in the olnmp, es seen more particularly in{ig.i5, which is a. vertical cross-sectionfthrough that portion of therest and clamp. A`roller may, it' required, ybe substituted for thefixed smoother or presser K, and also two rollers in place of the clampz, one on erich side of the rest h. In vthe letter cnsethe centre of therollers would, have to be in line with the centre of the presser K, andthe two rollers would he secured to :in extension of the spring I, so esto travel with the presser K and. hold the leather down whore it isneeded.

Having thus described my invention, what I claim als new, and desire tose'euro by Letters Patent, is-

1.. The application of a. trendle to n machine for pressing leatherseems; substantially herein shown and described. i l I 2. The erin c',on the treodle E, in connection with the spring cond roiler C,substantially ns and for the purpose herein shown and described.

3. The spring I, and the manner of regulating its pressure by meansofthe serew g, substantially as herein shown and described.

4. The rest h sind clamp h', in Connection with the pin Z :und springz', mede 'and operating substantially as und for the purpose hereinshown and described.

5. The removable i clamp and holder H, in combination with the ixedsupports G, substantially as and for the purpose herein shown anddescribed., v I

6. The sliding-bnr F, towhieh the spring I is secured, when mede andoperating substantially as herein shown and described.

7. The rest 7L, which is so constructed that its lower edge will beparellel'with its upper surface, substantially-as and for the purposeherein `Shown and described.

' WiLLrAM MAY.

Witnesses:

F. A. DURKEN, W. WV. WrlnAron.

